| Date: | 2015-12-20 |
| Time: | 1524 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | ~3.75-4m |
| Time Entered: | 2015-12-20 15:25:02 |
| Time Updated: | 2015-12-20 17:29:43 |
| Time Uploaded: | 2015-12-20 15:29:38 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | Eruption start a little after mid-1524. Done at ~mid-1528. |